I'm a little confused now with what I actually have. I fear a Frankenmyford (remember, it was one of the last ML7s off the production line, according to the serial numbers on lathes.co.uk)

Click image for larger version.  Name: IMG_0022.jpg  Views: 398  Size: 169.2 KB  ID: 26472

The link to the conversion site that John provided at the head of this thread (bottom of https://cncyourmyford.com/modifications-needed/), suggests the extra bolt-hole on the left of the saddle is that of a Super-7 saddle, not the ML7. And the bore for the cross feed screw is 1/2"